MAGNETIC STRUCTURE, MAGNETIC SHIELD, AND MAGNETIC POLE USED FOR MAGNETIC RECORDING HEAD

摘要

PROBLEM TO BE SOLVED: To provide a magnetic structure used for a magnetic recording head to prevent stray field writing. SOLUTION: A magnetic structure 500 is a magnetic shield or a magnetic pole of a write head, and advantageous for use in a perpendicular recording system especially susceptible to stray field writing. The magnetic structure includes a forward protruding portion 504 that extends toward the air bearing surface (ABS) 502 of the head, and first and second wing portions 518 and 520 that extend laterally from the forward protruding portion. The wing portions respectively include inner constant recess portions 530 and 532 and outer tapered portions 534 and 536. The inner constant recess portion of each wing prevents stray field writing and magnetic saturation. The outer tapered portions tapered away from the ABS as they extend laterally outward further prevent stray field writing by removing the outer corners of the shield away from the ABS. COPYRIGHT: (C)2008,JPO&INPIT